Evaluation of Residual Stresses in Welded ASTM A36 Structural Steel by Metal Active Gas (MAG) Welding Process

Abstract:

The use of structural steel in the industry is increasing every day, and the study of stress state after welding has been shown to be of great importance. Nondestructive techniques become quite appropriate to be performed before and during the service component of welded, and thus ensure its integrity. The magnetic technique to be nondestructive, and easy to apply in the field, has potential to be an inspection tool for measuring residual stresses and other microstructural parameters. In this work it was possible to analyze the state of residual stresses through nondestructive techniques, Magnetic Barkhausen Noise and X-ray Diffraction, as well as the semi-destructive technique, high speed hole drilling method, and thereby determine the residual stresses in ASTM A36 steel plate welded by MAG (Metal Active Gas) process.

• Periodical: Materials Science Forum (Volume 869)
• Pages: 567-571
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.869.567
• Online since: August 2016
• Authors: Sandro Rosa Correa, Marcos Flavio de Campos, C.J. Marcelo, José Adilson de Castro, Maria da Penha Cindra Fonseca, T.C. Chuvas, M.A. Campos, Linilsson Rodrigues Padovese
• Keywords: ASTM A36 Steel, Hole Drilling, Magnetic Barkhausen Noise (MBN), Non-Destructive Testing, Residual Stress, Welding, X-Ray Diffraction

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